Sökning: "popular species"
Visar resultat 21 - 25 av 382 avhandlingar innehållade orden popular species.
21. The influence of soil pH on plant and microbial communities in sandy grasslands
Sammanfattning : Sandy, calcareous grasslands are species rich temperate semi-natural grasslands. The species composition in 136 plots was analysed in relation to soil chemistry parameters; extractable P and N, soil pH and lime content. LÄS MER
22. Hydrogen Production by Caldicellulosiruptor species: The Organism and the Metabolism
Sammanfattning : Hydrogen holds a great promise as an efficient and clean future energy carrier due to its high energy density and lack of pollutant generation. Anaerobic degradation of organic substrates by heterotrophic microorganisms enables the production of hydrogen from a wide spectrum of agricultural feedstock and waste products. LÄS MER
23. Ecology and conservation of the moth Dysauxes ancilla
Sammanfattning : The ecology of the moth Dysauxes ancilla was studied in the only Swedish breeding area at Beijershamn, situated on the Baltic island of Öland. The population is a northern outpost, separated from the species´ continous distribution area in middle- and southeast Europe. LÄS MER
24. Knowledge and pleasure at Regent's Park : the gardens of the Zoological Society of London during the nineteenth century
Sammanfattning : The subject of this dissertation is the Zoological Gardens of the Zoological Society of London (f. 1826) in the nineteenth century. Located in Regent s Park, it was the express purpose of the Gardens (f. 1828) to function as a testing-ground for acclimatisation and to demonstrate the scientific importance of various animal species. LÄS MER
25. Natural enemies: Functional aspects of local management in agricultural landscapes
Sammanfattning : Agricultural intensification has raised the global food production but also caused major concerns about environmental and health effects, including contamination by pesticides. Pesticide applications may induce toxicity not only on the target pest species but especially on non-target species. LÄS MER